Reasons to choose U4R
Released in 2004, U4R has about 21 mm² of sensor area, 4 MP effective resolution, and a 140 g body. Use these values to narrow the field, not as an overall image-quality score.
Side-by-side comparison
Contax U4R
vs Sanyo Xacti C40
VS
Sensor area
21 mm²
U4R21 mm²
Xacti C40- Area ratio
- 1:1
- Absolute difference
- 0 mm²
- Relative difference
- 0%
The U4R and Xacti C40 have the same sensor area. Compare pixel density, sensor architecture, and release generation to understand likely image-quality differences.
These cameras were released 2 years apart. Consider sensor generation when comparing pixel metrics.
Key specification differences
U4RMetricXacti C40
4 MPEffective pixels4 MP
5.33 × 4Sensor5.33 × 4
2.31 µmPixel pitch2.31 µm
5.33 µm²Pixel area5.33 µm²
18.76 MP/cm²Pixel density18.76 MP/cm²
6.49Crop factor6.49
—Maximum video—
140 gWeight152 g
MultiMedia, Secure DigitalStorageSecure Digital
Li-Ion Li-ion batteryBatteryLi-Ion Li-ion battery
Amber marks the value that is generally preferable in this comparison context. It is not an overall camera score.
How to choose between these cameras
The U4R and Xacti C40 have the same sensor area. The U4R has the lighter body. The U4R and Xacti C40 have the same effective resolution. The Xacti C40 is the newer release. Also consider the lens system and subjects you shoot.
Reasons to choose Xacti C40
Released in 2006, Xacti C40 has about 21 mm² of sensor area, 4 MP effective resolution, and a 152 g body. Use these values to narrow the field, not as an overall image-quality score.